Why not have all offspring be capable of producing young? You might learn something obvious about yourself that you never noticed, and you might initiate some important conversations with your romantic partners about how you converge and diverge. And it is not just about you alone. View image of Why do we need male animals? They rely on water currents to transport their reproductive cells, which is likely how they have been doing it for the last 1. That makes them more vulnerable when a parasite comes along. In their second study, 1, college students were given the list of reasons and, for each one, they were asked to indicate approximately how many of their previous sexual experiences could be attributed to that reason on a scale ranging from 1 none of my sexual experiences to 5 all of my sexual experiences. At the end of the day, sex is truly pleasurable because through it we may transcend our aloneness and form a meaningful bond with another human being. In a sexual encounter, a small group gathers usually two, no more. I'm not sure if this is exactly what sexuals feel - because a lot of them seem to be able to detach that emotional component and just want to have sex with almost any attractive person - even if they don't know them well if at all , but then some have explained it as exactly what I said here, so I guess I understand. Our brains are designed to motivate us toward that behavior. Continue Reading Below Advertisement It seems like there's another reason here that we're missing. Children come from sex, one learns. An asexual species does not have to waste time and energy searching for and impressing a partner, they just grow and divide in two.